diff --git a/boards/esp32_16M.json b/boards/esp32_16M.json
index 7bcc0db53..69abb9a09 100644
--- a/boards/esp32_16M.json
+++ b/boards/esp32_16M.json
@@ -4,7 +4,7 @@
       "ldscript": "esp32_out.ld"
     },
     "core": "esp32",
-    "extra_flags": "-DARDUINO_ESP32_DEV -DESP32_16M",
+    "extra_flags": "-DARDUINO_ESP32_DEV -DBOARD_HAS_PSRAM -DESP32_16M",
     "f_cpu": "80000000L",
     "f_flash": "40000000L",
     "flash_mode": "dout",
diff --git a/boards/esp32_4M.json b/boards/esp32_4M.json
index 4f549bb3e..f43be6848 100644
--- a/boards/esp32_4M.json
+++ b/boards/esp32_4M.json
@@ -4,7 +4,7 @@
       "ldscript": "esp32_out.ld"
     },
     "core": "esp32",
-    "extra_flags": "-DARDUINO_ESP32_DEV -DESP32_4M",
+    "extra_flags": "-DARDUINO_ESP32_DEV -DBOARD_HAS_PSRAM -DESP32_4M",
     "f_cpu": "80000000L",
     "f_flash": "40000000L",
     "flash_mode": "dout",
diff --git a/boards/esp32_8M.json b/boards/esp32_8M.json
index 616eb16d3..adcd0caaa 100644
--- a/boards/esp32_8M.json
+++ b/boards/esp32_8M.json
@@ -4,7 +4,7 @@
       "ldscript": "esp32_out.ld"
     },
     "core": "esp32",
-    "extra_flags": "-DARDUINO_ESP32_DEV -DESP32_8M",
+    "extra_flags": "-DARDUINO_ESP32_DEV -DBOARD_HAS_PSRAM -DESP32_8M",
     "f_cpu": "80000000L",
     "f_flash": "40000000L",
     "flash_mode": "dout",